10-3. Freeze Prevention (Cooling)
●
This function prevents freezing of the indoor heat exchange coil.
●
When the compressor has been running for 10 minutes or more and the temperature of the indoor heat
exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor
does not start again until the temperature rises above 8°C or 6 minutes has elapsed.
10-4. Overload Prevention (Heating)
●
This function prevents overheating of the indoor heat exchange coil.
●
When the temperature of the indoor heat exchange coil rises above 54°C, and if the indoor fan is L (low speed),
then the fan speed changes from L (low speed) to M (medium speed).
●
When the temperature of the indoor heat exchange coil rises above 57°C, the outdoor fan stops.
24
ON
ON
ON
ON
OFF
OFF
Set speed
More than
10 minutes
6 minutes
T+1 ° C
Indoor heat exch.
coil temp.
–1 ° C
Compressor
Indoor fan
Room temp.
Thermo. OFF
Thermo. ON
Set temp. T ° C
More than
10 minutes
More than
6 minutes
Set speed
ON
ON
OFF
ON
H or M or L
H
H
H, M
H
M, L
H
M
57
54
47
44
Indoor heat
exch. coil
temp. ° C
Outdoor fan
Indoor fan
Compressor
